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KDD
2009
ACM
14 years 8 months ago
2009
ACM
Collaborative filtering is the most popular approach to build recommender systems and has been successfully employed in many applications. However, it cannot make recommendations ...
SIAMJO
2008
13 years 7 months ago
2008
We present a nonsmooth optimization technique for nonconvex maximum eigenvalue functions and for nonsmooth functions which are infinite maxima of eigenvalue functions. We prove glo...
COMCOM
2000
13 years 7 months ago
2000
In this paper, we describe a thread of research which we have followed off and on at Cambridge for about three years. Our topic is the security of electronic documents, in the bro...
AIRWEB
2005
Springer
14 years 1 months ago
2005
Springer
Web spamming, the practice of introducing artificial text and links into web pages to affect the results of searches, has been recognized as a major problem for search engines. ...
IJWIS
2007
13 years 7 months ago
2007
Purpose – This paper aims to address some security issues in open systems such as service-oriented applications and grid computing. It proposes a security framework for these sy...